CN112139495A - Method for repairing broken teeth of gear through additive remanufacturing - Google Patents
Method for repairing broken teeth of gear through additive remanufacturing Download PDFInfo
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- CN112139495A CN112139495A CN202010903677.1A CN202010903677A CN112139495A CN 112139495 A CN112139495 A CN 112139495A CN 202010903677 A CN202010903677 A CN 202010903677A CN 112139495 A CN112139495 A CN 112139495A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
- Powder Metallurgy (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a method for repairing broken teeth of a gear by additive remanufacturing, and belongs to the field of additive remanufacturing. The method comprises the following specific steps: and (3) polishing and flattening broken teeth of the gear to be repaired, machining a groove on the broken teeth, and completely cleaning the workpiece. And filling the groove by additive manufacturing, and repairing the rest part of the broken tooth on the basis. And after the repair allowance is removed by machining, evaluating the performance of the restored gear. The invention realizes the accurate forming and repairing of the broken gear of the gear and has the advantage of high bonding strength between the newly repaired gear and the base material.
Description
Technical Field
The invention relates to the field of additive remanufacturing, in particular to a method for repairing broken teeth of a gear through additive remanufacturing.
Background
Gears are transmission elements widely used in the mechanical industry, have great effect particularly in engines, and are the basis for transmitting power and ensuring stable operation of the engines. Under the condition of high load and long-time operation, the radial transmission capacity of the transmission shaft is large, so that the area of a contact area is reduced, the contact stress is increased, and the gear teeth are easy to generate cracks. Crack propagation occurs under the action of working stress until fracture occurs. The process required to make gears that meet the service performance of an engine is complex, long-lasting, and very expensive. In order to reduce the cost and reduce the waste of resources, the complete repair of the broken teeth of the engine gear is very important. The additive manufacturing technology has the characteristics of simple process, easy control and low cost. Can greatly improve the processing efficiency, realize workpieces without defects and with uniform tissue components, and has important application value in the field of mechanical industry. How to reasonably apply the additive manufacturing technology to complete repair of broken teeth of the gear is a problem to be solved by a person skilled in the art.
The laser cladding repair process of the Danyang macrograph laser science and technology Limited company patent 201210351302.4 gear mainly relates to the laser repair of the gear, and the hardness and the wear resistance of the repaired gear are improved.
Patent 201822305668.1 of Yangquan coal industry group Huayue mechanical Limited company coal equipment research institute introduces a laser cladding gear reconstruction repair method. The method repairs the gear through a laser cladding technology. The repaired surface layer and the matrix can form metallurgical bonding, and the wear resistance, corrosion resistance, heat resistance and oxidation resistance of the surfaces of several layers are obviously improved.
In conclusion, the existing gear repairing method generally adopts a repairing method of grinding a fracture, the bonding strength is difficult to ensure, and stress concentration is easy to cause secondary damage due to mismatch of materials and tissues in the using process.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for completely repairing broken teeth of a gear, so that the aims of tightly combining the broken teeth of the repaired gear with an original gear and ensuring the effective meshing transmission of gear teeth are fulfilled.
In order to realize the purpose, the invention is realized by the following technical scheme:
a method for repairing broken teeth of a gear through additive remanufacturing comprises the following steps:
(1) polishing and flattening broken teeth of the gear to be repaired, machining grooves at the broken teeth, and completely cleaning the workpiece;
(2) filling and leveling the groove by an additive manufacturing method, and repairing the rest part of the broken teeth on the basis;
(3) machining and removing the repair allowance on the surface of the broken gear of the gear to complete the restoration of the broken gear;
(4) the restored gear teeth were evaluated.
The grooves in the step (1) are distributed along the tooth thickness direction and/or the tooth width direction.
The shape of the groove in the step (1) is an inverted triangle, an inverted trapezoid or a U shape.
The number of the grooves in the step (1) is 1-10.
The additive manufacturing method in the step (2) is a laser additive manufacturing method based on synchronous feeding, an electric arc additive manufacturing method based on synchronous feeding, an electron beam additive manufacturing method based on synchronous feeding or a plasma arc additive manufacturing method based on synchronous feeding.
The synchronous feeding method is synchronous powder feeding or synchronous wire feeding.
Compared with the prior art, the invention has the following beneficial effects:
the method for repairing the broken teeth of the gear greatly improves the bonding strength of the newly repaired gear teeth and the substrate due to the existence of the grooves distributed along the tooth thickness or the tooth width direction.
Drawings
FIG. 1 is a schematic view of a cross-sectional profile of a trench;
in the figure: a is an inverted trapezoid; b is U-shaped; c is an inverted triangle.
Fig. 2 is a schematic view of the grooves formed along the tooth thickness direction.
Fig. 3 is a schematic view of the grooves opened in the tooth width direction.
FIG. 4 is a schematic illustration of an additive manufactured repair tooth;
in the figure: 1, synchronously feeding a material barrel; 2 an energy source; 3, machining the head; 4, protective gas; 5, a groove; 6 gear to be repaired.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
The method for remanufacturing and repairing the broken gear of the gear by the aid of the laser additive manufacturing method comprises the following specific steps:
(1) polishing and flattening the broken tooth part of the gear to be repaired by using an angle grinder, processing an inverted trapezoidal groove on the broken tooth part along the tooth thickness direction, as shown in A in figure 1, thoroughly cleaning the part to be repaired by using kerosene, removing impurities on the surface, cleaning the surface by using alcohol to remove oil stains, and carrying out air drying treatment to wait for repair.
(2) The synchronous feeding barrel 1 is used for conveying powder to the groove 5, the energy input into a molten pool is controlled through a laser beam energy source, the processing head 3 is used for controlling the shape track, and the protective gas 4 is used for protecting the whole repairing process to prevent a metal molten pool from being oxidized.
(3) Firstly, laser synchronous powder feeding and material increasing are adopted to manufacture and fill and level the groove, then a path is reset, and the repair of broken teeth of the rest part of the gear is completed on the path.
(4) And (5) machining and removing the repair allowance of the surface of the broken gear of the gear to complete the restoration of the broken gear.
(5) The restored gear teeth were evaluated.
Evaluating the bonding strength, hardness and wear resistance of the newly repaired gear teeth and the substrate; and (5) flaw detection is carried out, and whether the detection is qualified or not is detected.
Example 2
The method for remanufacturing and repairing the broken gear of the gear by the aid of the arc additive manufacturing method comprises the following specific steps:
(1) and (2) polishing and flattening the broken tooth part of the gear to be repaired by using an angle grinder, processing three U-shaped grooves on the broken tooth part along the tooth thickness direction, as shown in B in figure 1, completely cleaning the part to be repaired by using kerosene, removing impurities on the surface, cleaning the surface by using alcohol to remove oil stains, and carrying out air drying treatment to wait for repair.
(2) The synchronous feeding barrel 1 is used for conveying powder to the groove 5, the energy input into a molten pool is controlled through a plasma arc energy source, the processing head 3 is used for controlling the shape track, and the protective gas 4 is used for protecting the whole repairing process to prevent a metal molten pool from being oxidized.
(3) Firstly, a groove is filled and leveled by adopting plasma arc synchronous wire feeding additive manufacturing, then a path is reset, and the repair of broken teeth of the rest part of the gear is completed on the path.
(4) And (5) machining and removing the repair allowance of the surface of the broken gear of the gear to complete the restoration of the broken gear.
(5) The restored gear teeth were evaluated.
Evaluating the bonding strength, hardness and wear resistance of the newly repaired gear teeth and the substrate; and (5) flaw detection is carried out, and whether the detection is qualified or not is detected.
Example 3
The method for carrying out additive remanufacture repairing on the broken gear of the gear by adopting an electron beam additive manufacturing method comprises the following specific steps:
(1) and (3) polishing and flattening the broken tooth part of the gear to be repaired by using an angle grinder, processing five inverted triangular grooves on the broken tooth part in a direction vertical to the tooth thickness, completely cleaning the part to be repaired by using kerosene as shown in C in figure 1, removing impurities on the surface, cleaning the surface by using alcohol to remove oil stains, and air-drying the surface to wait for repair.
(2) The synchronous feeding barrel 1 is used for conveying powder to the groove 5, the energy input into a molten pool is controlled through an electron beam energy source, the processing head 3 is used for controlling the shape track, and the protective gas 4 is used for protecting the whole repairing process to prevent a metal molten pool from being oxidized.
(3) Firstly, an electron beam is adopted to synchronously feed powder and increase material to manufacture and fill the groove, then a path is reset, and the tooth breakage repair of the rest part of the gear is completed on the path.
(4) And (5) machining and removing the repair allowance of the surface of the broken gear of the gear to complete the restoration of the broken gear.
(5) The restored gear teeth were evaluated.
Evaluating the bonding strength, hardness and wear resistance of the newly repaired gear teeth and the substrate; and (5) flaw detection is carried out, and whether the detection is qualified or not is detected.
It is obvious that the above examples are only given to illustrate specific embodiments of the present invention, but the scope of the present invention is not limited thereto. Obvious modifications to the technical solution and the inventive concept according to the present invention are within the scope of the present invention for anyone skilled in the art.
Claims (10)
1. A method for repairing broken teeth of a gear through additive remanufacturing is characterized by comprising the following steps:
(1) polishing and flattening broken teeth of the gear to be repaired, machining grooves at the broken teeth, and completely cleaning the workpiece;
(2) filling and leveling the groove by an additive manufacturing method, and repairing the rest part of the broken teeth on the basis;
(3) machining and removing the repair allowance on the surface of the broken gear of the gear to complete the restoration of the broken gear;
(4) the restored gear teeth were evaluated.
2. The method of claim 1, wherein the grooves in step (1) are distributed along the thickness direction and/or the width direction of the teeth.
3. The method according to claim 1 or 2, wherein the shape of the groove in step (1) is an inverted triangle, an inverted trapezoid or a U-shape.
4. The method of claim 1 or 2, wherein the number of grooves in step (1) is 1-10.
5. The method of claim 3, wherein the number of grooves in step (1) is 1-10.
6. The method according to claim 1, 2 or 5, wherein the additive manufacturing method in the step (2) is a laser additive manufacturing method based on synchronous feeding, an arc additive manufacturing method based on synchronous feeding, an electron beam additive manufacturing method based on synchronous feeding, or a plasma arc additive manufacturing method based on synchronous feeding.
7. The method according to claim 3, wherein the additive manufacturing method in the step (2) is a laser additive manufacturing method based on synchronous feeding, an arc additive manufacturing method based on synchronous feeding, an electron beam additive manufacturing method based on synchronous feeding, or a plasma arc additive manufacturing method based on synchronous feeding.
8. The method according to claim 4, wherein the additive manufacturing method in the step (2) is a laser additive manufacturing method based on synchronous feeding, an arc additive manufacturing method based on synchronous feeding, an electron beam additive manufacturing method based on synchronous feeding, or a plasma arc additive manufacturing method based on synchronous feeding.
9. The method of claim 6, wherein the synchronous feeding method is synchronous powder feeding or synchronous wire feeding.
10. The method according to claim 7 or 8, wherein the synchronous feeding method is synchronous powder feeding or synchronous wire feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010903677.1A CN112139495A (en) | 2020-09-01 | 2020-09-01 | Method for repairing broken teeth of gear through additive remanufacturing |
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| CN202010903677.1A CN112139495A (en) | 2020-09-01 | 2020-09-01 | Method for repairing broken teeth of gear through additive remanufacturing |
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| CN112139495A true CN112139495A (en) | 2020-12-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116100029A (en) * | 2022-11-18 | 2023-05-12 | 国营川西机器厂 | Repair method for damage of aeroengine comb plate |
| US20230185276A1 (en) * | 2021-12-10 | 2023-06-15 | International Business Machines Corporation | Determining optimal of additive manufacturing and/or three dimensional printing processes |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021565A (en) * | 2009-09-23 | 2011-04-20 | 沈阳大陆激光技术有限公司 | method for repairing supercharger nozzle ring of internal-combustion engine |
| CN102059500A (en) * | 2010-11-25 | 2011-05-18 | 秦皇岛洪川实业有限公司 | Laser repairing method for tooth corona reconstructing of transmission tooth roller of single-roller crusher |
| JP2011106431A (en) * | 2009-11-20 | 2011-06-02 | Toshiba Corp | Repairing method of gas turbine moving blade and gas turbine moving blade |
| CN102828182A (en) * | 2012-09-20 | 2012-12-19 | 丹阳宏图激光科技有限公司 | Laser cladding repair process for gear |
| CN106591826A (en) * | 2016-10-27 | 2017-04-26 | 中国人民解放军第五七九工厂 | Repair material for repairing turbine blade tip cracks and repair method thereof |
| CN107790953A (en) * | 2016-08-29 | 2018-03-13 | 方芳 | Gear restorative procedure |
| CN109371393A (en) * | 2018-11-05 | 2019-02-22 | 阳泉煤业集团华越机械有限公司煤机装备研究院 | A kind of laser melting coating gear reconstruction restorative procedure |
| CN110735908A (en) * | 2019-10-29 | 2020-01-31 | 中交烟台环保疏浚有限公司 | Method for repairing broken gear |
-
2020
- 2020-09-01 CN CN202010903677.1A patent/CN112139495A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021565A (en) * | 2009-09-23 | 2011-04-20 | 沈阳大陆激光技术有限公司 | method for repairing supercharger nozzle ring of internal-combustion engine |
| JP2011106431A (en) * | 2009-11-20 | 2011-06-02 | Toshiba Corp | Repairing method of gas turbine moving blade and gas turbine moving blade |
| CN102059500A (en) * | 2010-11-25 | 2011-05-18 | 秦皇岛洪川实业有限公司 | Laser repairing method for tooth corona reconstructing of transmission tooth roller of single-roller crusher |
| CN102828182A (en) * | 2012-09-20 | 2012-12-19 | 丹阳宏图激光科技有限公司 | Laser cladding repair process for gear |
| CN107790953A (en) * | 2016-08-29 | 2018-03-13 | 方芳 | Gear restorative procedure |
| CN106591826A (en) * | 2016-10-27 | 2017-04-26 | 中国人民解放军第五七九工厂 | Repair material for repairing turbine blade tip cracks and repair method thereof |
| CN109371393A (en) * | 2018-11-05 | 2019-02-22 | 阳泉煤业集团华越机械有限公司煤机装备研究院 | A kind of laser melting coating gear reconstruction restorative procedure |
| CN110735908A (en) * | 2019-10-29 | 2020-01-31 | 中交烟台环保疏浚有限公司 | Method for repairing broken gear |
Non-Patent Citations (3)
| Title |
|---|
| 中国机械工程学会: "《中国机械工程技术路线图》", 30 November 2016 * |
| 张群莉等: "预制坡口角度对激光增材再制造IN718合金组织与性能的影响", 《表面技术》 * |
| 王志坚等: "激光再制造齿轮零件的成形关键问题分析", 《第四届世界维修大会》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230185276A1 (en) * | 2021-12-10 | 2023-06-15 | International Business Machines Corporation | Determining optimal of additive manufacturing and/or three dimensional printing processes |
| CN116100029A (en) * | 2022-11-18 | 2023-05-12 | 国营川西机器厂 | Repair method for damage of aeroengine comb plate |
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